The Lancet medical journal said Thursday that it has asked for clarification from the developers of a  Russian COVID-19 vaccine after doubts arose about the plausibility of their results.

Russia announced last month that its vaccine, named “Sputnik V” after the Soviet-era satellite that was the first launched into space in 1957, had already received approval.

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Researchers identified what they said appeared to be a number of duplications in figures presented and concluded that the data within the study was “highly unlikely” to be correct.

Read more at i24NEWS.